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1.27ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6401046249

Certificate GIA 6401046249

Diamond specifications and retailer prices

From £3,827 GBP
As of October 31, 2026
Save £4,376 GBP (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £8,203 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.27ct natural round diamond

This 1.27ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6401046249. Listed at 6 retailers as of October 29, 2026, with prices from £3,827 to £8,203, a £4,376 spread on the same certified stone. Diamond Quarter lists it at £8,203. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.27
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6401046249
Dimensions6.92 × 6.89 × 4.31 mm
L/W Ratio1.00
Top View
6.92 mm6.89 mm1.27 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6401046249
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,827 GBP|Low: £3,135 GBP|High: £6,271 GBP|Avg: £4,137 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4£3,135 GBP
Retailer 6£3,137 GBP
Retailer 1£3,827 GBP
Retailer 5£4,294 GBP
Retailer 2£4,403 GBP
Retailer 3£6,230 GBP

37 data points across 6 retailers

6 retailers£3,827 GBP to £8,203 GBP

Retailer 1
-
£3,135 GBP
$4,200 USD
Price last confirmed 13 days ago
A
Retailer 2
-
£3,827 GBP
View
Retailer 3
-
£4,294 GBP
$5,753 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£4,403 GBP
€5,619 EUR
View
B
Retailer 5
-
£6,230 GBP
View
Most Expensive
B
Diamond Quarter
1.27SI2D64491E79N · Oct 29
£8,203 GBP
View
5 more retailers have this diamond
Prices start from £3,827 GBPSave up to £4,376 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.27ct Round
£3,827 GBP